EP 4016031 A4 20221005 - PRESSURE SENSOR
Title (en)
PRESSURE SENSOR
Title (de)
DRUCKSENSOR
Title (fr)
CAPTEUR DE PRESSION
Publication
Application
Priority
- CN 201910740362 A 20190812
- CN 2020108691 W 20200812
Abstract (en)
[origin: EP4016031A1] A pressure sensor (100) includes a pressure measuring device (120) including: a circuit board (121); and a processing unit (122) and a detection unit, both provided on the circuit board (121); the detection unit includes first, second and third MEMS sensing elements (123, 124, 125); the first MEMS sensing element (123) is configured to sense a first pressure (PI) at a first target position; the second MEMS sensing element (124) is configured to sense a second pressure (P2) at a second target position, and the third MEMS sensing element (125) is configured to sense a pressure difference (ΔP) between the first and second target positions; the processing unit (122) is configured to determine whether the three MEMS sensing elements (123, 124, 125) are abnormal based on the first and second pressures and on the pressure difference; if it is determined that at least one of the three MEMS sensing elements is abnormal, the processing unit (122) outputs abnormal diagnostic information; if it is determined that none of the three MEMS sensing elements is abnormal, the processing unit (122) outputs information about the pressure(s) at the first and/or second target position(s) and the pressure difference; thus rationality diagnosis of the pressure signals is achieved, resulting in increased reliability and accuracy in pressure measurement.
IPC 8 full level
G01L 13/06 (2006.01); G01L 15/00 (2006.01); G01L 27/00 (2006.01)
CPC (source: CN EP US)
B81B 3/0021 (2013.01 - US); G01L 13/06 (2013.01 - CN); G01L 15/00 (2013.01 - EP); G01L 19/0038 (2013.01 - EP); G01L 19/143 (2013.01 - EP); G01L 27/007 (2013.01 - EP); B81B 2201/0264 (2013.01 - US); B81B 2207/07 (2013.01 - US); B81B 2207/09 (2013.01 - US)
Citation (search report)
- [Y] CN 109655194 A 20190419 - UNITED AUTOMOTIVE ELECT SYS CO
- [Y] US 2012006119 A1 20120112 - BRODEN DAVID A [US], et al
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
EP 4016031 A1 20220622; EP 4016031 A4 20221005; CN 110501110 A 20191126; JP 2022544962 A 20221024; JP 7303374 B2 20230704; US 2022289557 A1 20220915; WO 2021027847 A1 20210218
DOCDB simple family (application)
EP 20851666 A 20200812; CN 201910740362 A 20190812; CN 2020108691 W 20200812; JP 2022509601 A 20200812; US 202117635097 A 20210812